radeonsi: add a debug flag to zero vram allocations
[mesa.git] / src / gallium / drivers / radeonsi / si_pipe.c
index 19b570e569e92e555b44b78eb13ddbb346cf2437..8f16b2bf8e69af28d7aaff7e9f886a07479df494 100644 (file)
 #include "vl/vl_decoder.h"
 #include "driver_ddebug/dd_util.h"
 
+#include <llvm-c/Transforms/IPO.h>
+#include <llvm-c/Transforms/Scalar.h>
+#if HAVE_LLVM >= 0x0700
+#include <llvm-c/Transforms/Utils.h>
+#endif
+
 static const struct debug_named_value debug_options[] = {
        /* Shader logging options: */
        { "vs", DBG(VS), "Print vertex shaders" },
@@ -76,6 +82,7 @@ static const struct debug_named_value debug_options[] = {
        { "nowc", DBG(NO_WC), "Disable GTT write combining" },
        { "check_vm", DBG(CHECK_VM), "Check VM faults and dump debug info." },
        { "reserve_vmid", DBG(RESERVE_VMID), "Force VMID reservation per context." },
+       { "zerovram", DBG(ZERO_VRAM), "Clear VRAM allocations." },
 
        /* 3D engine options: */
        { "switch_on_eop", DBG(SWITCH_ON_EOP), "Program WD/IA to switch on end-of-packet." },
@@ -121,12 +128,48 @@ static void si_init_compiler(struct si_screen *sscreen,
                gallivm_create_target_library_info(compiler->triple);
        if (!compiler->target_library_info)
                return;
+
+       compiler->passmgr = LLVMCreatePassManager();
+       if (!compiler->passmgr)
+               return;
+
+       LLVMAddTargetLibraryInfo(compiler->target_library_info,
+                                compiler->passmgr);
+
+       /* Add LLVM passes into the pass manager. */
+       if (sscreen->debug_flags & DBG(CHECK_IR))
+               LLVMAddVerifierPass(compiler->passmgr);
+
+       LLVMAddAlwaysInlinerPass(compiler->passmgr);
+       /* This pass should eliminate all the load and store instructions. */
+       LLVMAddPromoteMemoryToRegisterPass(compiler->passmgr);
+       LLVMAddScalarReplAggregatesPass(compiler->passmgr);
+       LLVMAddLICMPass(compiler->passmgr);
+       LLVMAddAggressiveDCEPass(compiler->passmgr);
+       LLVMAddCFGSimplificationPass(compiler->passmgr);
+       /* This is recommended by the instruction combining pass. */
+       LLVMAddEarlyCSEMemSSAPass(compiler->passmgr);
+       LLVMAddInstructionCombiningPass(compiler->passmgr);
+
+       /* Get the data layout. */
+       LLVMTargetDataRef data_layout = LLVMCreateTargetDataLayout(compiler->tm);
+       if (!data_layout)
+               return;
+       compiler->data_layout = LLVMCopyStringRepOfTargetData(data_layout);
+       LLVMDisposeTargetData(data_layout);
 }
 
 static void si_destroy_compiler(struct si_compiler *compiler)
 {
+       if (compiler->data_layout)
+               LLVMDisposeMessage((char*)compiler->data_layout);
+       if (compiler->passmgr)
+               LLVMDisposePassManager(compiler->passmgr);
+#if HAVE_LLVM >= 0x0700
+       /* This crashes on LLVM 5.0 and 6.0 and Ubuntu 18.04, so leak it there. */
        if (compiler->target_library_info)
                gallivm_dispose_target_library_info(compiler->target_library_info);
+#endif
        if (compiler->tm)
                LLVMDisposeTargetMachine(compiler->tm);
 }
@@ -199,7 +242,7 @@ static void si_destroy_context(struct pipe_context *context)
                                sctx->b.destroy_query(&sctx->b,
                                                        sctx->dcc_stats[i].ps_stats[j]);
 
-               r600_texture_reference(&sctx->dcc_stats[i].tex, NULL);
+               si_texture_reference(&sctx->dcc_stats[i].tex, NULL);
        }
 
        if (sctx->query_result_shader)
@@ -244,25 +287,25 @@ static void si_destroy_context(struct pipe_context *context)
        FREE(sctx);
 }
 
-static enum pipe_reset_status
-si_amdgpu_get_reset_status(struct pipe_context *ctx)
+static enum pipe_reset_status si_get_reset_status(struct pipe_context *ctx)
 {
        struct si_context *sctx = (struct si_context *)ctx;
 
-       return sctx->ws->ctx_query_reset_status(sctx->ctx);
-}
+       if (sctx->screen->info.has_gpu_reset_status_query)
+               return sctx->ws->ctx_query_reset_status(sctx->ctx);
 
-static enum pipe_reset_status si_get_reset_status(struct pipe_context *ctx)
-{
-       struct si_context *sctx = (struct si_context *)ctx;
-       unsigned latest = sctx->ws->query_value(sctx->ws,
-                                                 RADEON_GPU_RESET_COUNTER);
+       if (sctx->screen->info.has_gpu_reset_counter_query) {
+               unsigned latest = sctx->ws->query_value(sctx->ws,
+                                                       RADEON_GPU_RESET_COUNTER);
+
+               if (sctx->gpu_reset_counter == latest)
+                       return PIPE_NO_RESET;
 
-       if (sctx->gpu_reset_counter == latest)
-               return PIPE_NO_RESET;
+               sctx->gpu_reset_counter = latest;
+               return PIPE_UNKNOWN_CONTEXT_RESET;
+       }
 
-       sctx->gpu_reset_counter = latest;
-       return PIPE_UNKNOWN_CONTEXT_RESET;
+       return PIPE_NO_RESET;
 }
 
 static void si_set_device_reset_callback(struct pipe_context *ctx,
@@ -369,13 +412,12 @@ static struct pipe_context *si_create_context(struct pipe_screen *screen,
        sctx->family = sscreen->info.family;
        sctx->chip_class = sscreen->info.chip_class;
 
-       if (sscreen->info.drm_major == 2 && sscreen->info.drm_minor >= 43) {
-               sctx->b.get_device_reset_status = si_get_reset_status;
+       if (sscreen->info.has_gpu_reset_counter_query) {
                sctx->gpu_reset_counter =
-                               sctx->ws->query_value(sctx->ws,
-                                                       RADEON_GPU_RESET_COUNTER);
+                       sctx->ws->query_value(sctx->ws, RADEON_GPU_RESET_COUNTER);
        }
 
+       sctx->b.get_device_reset_status = si_get_reset_status;
        sctx->b.set_device_reset_callback = si_set_device_reset_callback;
 
        si_init_context_texture_functions(sctx);
@@ -426,9 +468,6 @@ static struct pipe_context *si_create_context(struct pipe_screen *screen,
                                                       sctx);
        }
 
-       if (sscreen->info.drm_major == 3)
-               sctx->b.get_device_reset_status = si_amdgpu_get_reset_status;
-
        si_init_buffer_functions(sctx);
        si_init_clear_functions(sctx);
        si_init_blit_functions(sctx);
@@ -498,7 +537,7 @@ static struct pipe_context *si_create_context(struct pipe_screen *screen,
                        goto fail;
 
                /* Initialize the memory. */
-               struct radeon_winsys_cs *cs = sctx->gfx_cs;
+               struct radeon_cmdbuf *cs = sctx->gfx_cs;
                radeon_emit(cs, PKT3(PKT3_WRITE_DATA, 3, 0));
                radeon_emit(cs, S_370_DST_SEL(V_370_MEMORY_SYNC) |
                            S_370_WR_CONFIRM(1) |
@@ -790,7 +829,7 @@ struct pipe_screen *radeonsi_screen_create(struct radeon_winsys *ws,
                                           const struct pipe_screen_config *config)
 {
        struct si_screen *sscreen = CALLOC_STRUCT(si_screen);
-       unsigned num_threads, num_compiler_threads, num_compiler_threads_lowprio, i;
+       unsigned hw_threads, num_comp_hi_threads, num_comp_lo_threads, i;
 
        if (!sscreen) {
                return NULL;
@@ -847,17 +886,30 @@ struct pipe_screen *radeonsi_screen_create(struct radeon_winsys *ws,
 
        si_disk_cache_create(sscreen);
 
-       /* Only enable as many threads as we have target machines, but at most
-        * the number of CPUs - 1 if there is more than one.
-        */
-       num_threads = sysconf(_SC_NPROCESSORS_ONLN);
-       num_threads = MAX2(1, num_threads - 1);
-       num_compiler_threads = MIN2(num_threads, ARRAY_SIZE(sscreen->compiler));
-       num_compiler_threads_lowprio =
-               MIN2(num_threads, ARRAY_SIZE(sscreen->compiler_lowp));
+       /* Determine the number of shader compiler threads. */
+       hw_threads = sysconf(_SC_NPROCESSORS_ONLN);
+
+       if (hw_threads >= 12) {
+               num_comp_hi_threads = hw_threads * 3 / 4;
+               num_comp_lo_threads = hw_threads / 3;
+       } else if (hw_threads >= 6) {
+               num_comp_hi_threads = hw_threads - 2;
+               num_comp_lo_threads = hw_threads / 2;
+       } else if (hw_threads >= 2) {
+               num_comp_hi_threads = hw_threads - 1;
+               num_comp_lo_threads = hw_threads / 2;
+       } else {
+               num_comp_hi_threads = 1;
+               num_comp_lo_threads = 1;
+       }
+
+       num_comp_hi_threads = MIN2(num_comp_hi_threads,
+                                  ARRAY_SIZE(sscreen->compiler));
+       num_comp_lo_threads = MIN2(num_comp_lo_threads,
+                                  ARRAY_SIZE(sscreen->compiler_lowp));
 
        if (!util_queue_init(&sscreen->shader_compiler_queue, "si_shader",
-                            32, num_compiler_threads,
+                            64, num_comp_hi_threads,
                             UTIL_QUEUE_INIT_RESIZE_IF_FULL)) {
                si_destroy_shader_cache(sscreen);
                FREE(sscreen);
@@ -866,7 +918,7 @@ struct pipe_screen *radeonsi_screen_create(struct radeon_winsys *ws,
 
        if (!util_queue_init(&sscreen->shader_compiler_queue_low_priority,
                             "si_shader_low",
-                            32, num_compiler_threads_lowprio,
+                            64, num_comp_lo_threads,
                             UTIL_QUEUE_INIT_RESIZE_IF_FULL |
                             UTIL_QUEUE_INIT_USE_MINIMUM_PRIORITY)) {
               si_destroy_shader_cache(sscreen);
@@ -1017,9 +1069,34 @@ struct pipe_screen *radeonsi_screen_create(struct radeon_winsys *ws,
        if (debug_get_bool_option("RADEON_DUMP_SHADERS", false))
                sscreen->debug_flags |= DBG_ALL_SHADERS;
 
-       for (i = 0; i < num_compiler_threads; i++)
+       /* Syntax:
+        *     EQAA=s,z,c
+        * Example:
+        *     EQAA=8,4,2
+
+        * That means 8 coverage samples, 4 Z/S samples, and 2 color samples.
+        * Constraints:
+        *     s >= z >= c (ignoring this only wastes memory)
+        *     s = [2..16]
+        *     z = [2..8]
+        *     c = [2..8]
+        *
+        * Only MSAA color and depth buffers are overriden.
+        */
+       if (sscreen->info.has_eqaa_surface_allocator) {
+               const char *eqaa = debug_get_option("EQAA", NULL);
+               unsigned s,z,f;
+
+               if (eqaa && sscanf(eqaa, "%u,%u,%u", &s, &z, &f) == 3 && s && z && f) {
+                       sscreen->eqaa_force_coverage_samples = s;
+                       sscreen->eqaa_force_z_samples = z;
+                       sscreen->eqaa_force_color_samples = f;
+               }
+       }
+
+       for (i = 0; i < num_comp_hi_threads; i++)
                si_init_compiler(sscreen, &sscreen->compiler[i]);
-       for (i = 0; i < num_compiler_threads_lowprio; i++)
+       for (i = 0; i < num_comp_lo_threads; i++)
                si_init_compiler(sscreen, &sscreen->compiler_lowp[i]);
 
        /* Create the auxiliary context. This must be done last. */